/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.it;

import org.apache.iotdb.db.conf.IoTDBConfig;
import org.apache.iotdb.db.conf.IoTDBDescriptor;
import org.apache.iotdb.db.wal.utils.WALMode;
import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.ClusterIT;
import org.apache.iotdb.itbase.category.LocalStandaloneIT;
import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Locale;

import static org.apache.iotdb.db.constant.TestConstant.*;
import static org.junit.Assert.*;

@Ignore
@RunWith(IoTDBTestRunner.class)
@Category({LocalStandaloneIT.class, ClusterIT.class})
public class IoTDBRecoverUnclosedIT {
    private static final IoTDBConfig config = IoTDBDescriptor.getInstance().getConfig();

    private static final String TIMESTAMP_STR = "Time";
    private static final String TEMPERATURE_STR = "root.ln.wf01.wt01.temperature";
    private static String[] creationSqls =
            new String[]{
                    "CREATE DATABASE root.vehicle.d0",
                    "CREATE DATABASE root.vehicle.d1",
                    "CREATE TIMESERIES root.vehicle.d0.s0 WITH DATATYPE=INT32, ENCODING=RLE",
                    "CREATE TIMESERIES root.vehicle.d0.s1 WITH DATATYPE=INT64, ENCODING=RLE",
                    "CREATE TIMESERIES root.vehicle.d0.s2 WITH DATATYPE=FLOAT, ENCODING=RLE",
                    "CREATE TIMESERIES root.vehicle.d0.s3 WITH DATATYPE=TEXT, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.vehicle.d0.s4 WITH DATATYPE=BOOLEAN, ENCODING=PLAIN"
            };
    private static String[] dataSet2 =
            new String[]{
                    "CREATE DATABASE root.ln.wf01.wt01",
                    "CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=PLAIN",
                    "CREATE TIMESERIES root.ln.wf01.wt01.hardware WITH DATATYPE=INT32, ENCODING=PLAIN",
                    "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                            + "values(1, 1.1, false, 11)",
                    "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                            + "values(2, 2.2, true, 22)",
                    "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                            + "values(3, 3.3, false, 33 )",
                    "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                            + "values(4, 4.4, false, 44)",
                    "INSERT INTO root.ln.wf01.wt01(timestamp,temperature,status, hardware) "
                            + "values(5, 5.5, false, 55)"
            };
    private final String d0s0 = "root.vehicle.d0.s0";
    private final String d0s1 = "root.vehicle.d0.s1";
    private final String d0s2 = "root.vehicle.d0.s2";
    private final String d0s3 = "root.vehicle.d0.s3";
    private String insertTemplate =
            "INSERT INTO root.vehicle.d0(timestamp,s0,s1,s2,s3,s4)" + " VALUES(%d,%d,%d,%f,%s,%s)";

    private WALMode prevWALMode;

    @Before
    public void setUp() throws Exception {
        EnvFactory.getEnv().initBeforeClass();
        prevWALMode = config.getWalMode();
        config.setWalMode(WALMode.SYNC);
        prepareData();
    }

    @After
    public void tearDown() throws Exception {
        config.setWalMode(prevWALMode);
        EnvFactory.getEnv().cleanAfterClass();
    }

    @Test
    public void test() throws SQLException, IOException {
        String[] retArray = new String[]{"0,2", "0,4", "0,3"};
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {

            String selectSql = "select count(temperature) from root.ln.wf01.wt01 where time > 3";
            int cnt;
            try (ResultSet resultSet = statement.executeQuery(selectSql)) {
                assertNotNull(resultSet);
                cnt = 0;
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(count(TEMPERATURE_STR));
                    assertEquals(retArray[cnt], ans);
                    cnt++;
                }
                assertEquals(1, cnt);
            }

            selectSql = "select min_time(temperature) from root.ln.wf01.wt01 where time > 3";
            try (ResultSet resultSet = statement.executeQuery(selectSql)) {
                assertNotNull(resultSet);
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(minTime(TEMPERATURE_STR));
                    assertEquals(retArray[cnt], ans);
                    cnt++;
                }
                assertEquals(2, cnt);
            }

            selectSql = "select min_time(temperature) from root.ln.wf01.wt01 where temperature > 3";
            try (ResultSet resultSet = statement.executeQuery(selectSql)) {
                assertNotNull(resultSet);
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(minTime(TEMPERATURE_STR));
                    assertEquals(retArray[cnt], ans);
                    cnt++;
                }
                assertEquals(3, cnt);
            }

        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        }

        // TODO: replace restartDaemon() with new methods in Env.
        try {
            // EnvironmentUtils.restartDaemon();
        } catch (Exception e) {
            fail();
        }
        insertMoreData();
        try {
            // EnvironmentUtils.restartDaemon();
        } catch (Exception e) {
            fail();
        }

        // test count, max, min value
        retArray = new String[]{"0,8499,500.0", "0,2499,500.0"};
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            String selectSql = "select count(*) from root.vehicle.d0";
            ResultSet tempResultSet = statement.executeQuery(selectSql);
            assertNotNull(tempResultSet);
            tempResultSet.next();
            assertEquals(7500, tempResultSet.getInt("count(" + d0s0 + ")"));

            selectSql =
                    "select max_value(s0),min_value(s2) "
                            + "from root.vehicle.d0 where time >= 100 and time < 9000";
            int cnt;
            try (ResultSet resultSet = statement.executeQuery(selectSql)) {
                assertNotNull(resultSet);
                cnt = 0;
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(maxValue(d0s0))
                                    + ","
                                    + resultSet.getString(minValue(d0s2));
                    assertEquals(retArray[cnt], ans);
                    cnt++;
                }
                assertEquals(1, cnt);
            }

            selectSql = "select max_value(s0),min_value(s2) from root.vehicle.d0 where time < 2500";
            try (ResultSet resultSet = statement.executeQuery(selectSql)) {
                assertNotNull(resultSet);
                while (resultSet.next()) {
                    String ans =
                            resultSet.getString(TIMESTAMP_STR)
                                    + ","
                                    + resultSet.getString(maxValue(d0s0))
                                    + ","
                                    + resultSet.getString(minValue(d0s2));
                    assertEquals(retArray[cnt], ans);
                    cnt++;
                }
                assertEquals(2, cnt);
            }
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage());
        }
    }

    private void prepareData() {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            for (String sql : creationSqls) {
                statement.execute(sql);
            }

            for (String sql : dataSet2) {
                statement.execute(sql);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void insertMoreData() {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {

            // prepare BufferWrite file
            for (int i = 5000; i < 7000; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
            }
            for (int i = 7500; i < 8500; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
            }
            // prepare Unseq-File
            for (int i = 500; i < 1500; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
            }
            for (int i = 3000; i < 6500; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
            }

            // prepare BufferWrite cache
            for (int i = 9000; i < 10000; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "true"));
            }
            // prepare Overflow cache
            for (int i = 2000; i < 2500; i++) {
                statement.execute(
                        String.format(
                                Locale.ENGLISH, insertTemplate, i, i, i, (double) i, "'" + i + "'", "false"));
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
